He may have promised to save the euro. But European Central Bank President Mario Draghi didn’t promise to make it strong. And that is just as well as Mr. Draghi will probably have to debase the currency soon if he is to save it. Both economically and politically, Mr. Draghi will have little choice. The debt crisis, which appeared to have been subsiding a few weeks ago, has reared its ugly ahead again, posing fresh risks to the region’s banking system. And economic growth, which many had hoped would start to improve, is once again deteriorating. In other words, all the measures that Mr. Draghi and the central bank ... (full story)